vwjeff

iTrader: (13)

Ok guys I did search and I just cant find my answer to my question

I installed some different gauges a few weeks ago

https://www.evolutionm.net/forums/sh...stewart+warner

My problem is that my new SW is reading 3 to 4 psi lower than my AM was.

So I hook up my cable and go for a drive. Here is what I am getting.

I am looking at the MAP senser on the log and it is showing in a 3rd gear pull at what was 23 psi on the AM and now only 19 on the SW gauge... 329.498 KPa... WTF

When I convert this it was something like 48psi, and we know that aint right

Next up I checked the Barometer but it was staying around 100 KPa, so I know that aint it either.

So what gives here am I looking at the wrong things, do I need to divide something somewhere, any ideas would be GREATLY appericated

I gotta get this figured out by this weekend, track day is the 7th (monday).

Ralph

iTrader: (19)

You're looking at the stock MAP sensor values? Or are you using the JDM IX map sensor? My JDM IX Map is 100% accurate and matching my Stewart Warner Gauge.

My AutoMeter was off by 3-4 PSI.

vwjeff

iTrader: (13)

Yes it is the stock MAP, is there a difference between the 2

Ralph

iTrader: (19)

https://www.evolutionm.net/forums/sh...52#post4074452

Read that post

I believe the stock MAP only reads up to 0psi or 1-2psi.. something like that.

The JDM IX Map sensor is a 3 Bar Map. Should be 100% accurate..

vwjeff

iTrader: (13)

Thanks Ralph

Bump so any more ideas

chrisw

iTrader: (2)

not all boost gauges are created equal. I am assuming these are both mechanical gauges right?

vwjeff

iTrader: (13)

yeah, they are machanical.

I understand not all are equal but da*m 4 psi